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Ligand modulation of active center to promote lead-free Cs_(2)AgInCl_(6)photocatalytic CO_(2)reduction

Journal of Energy Chemistry 2024年第8期95卷 660-669,I0015页

作者： Baofei Sun Wei Chen Yanyi Huang Daofu Wu Heng Luo Faguang Kuang Hongmei Ran Yichen Liu Liqin Gao Jinchen Zhou Bo Gao Qiang Huang Xiaosheng Tang Key Laboratory of Human Brain Bank for Functions and Diseases of Department of Education of Guizhou Province College of Basic MedicalGuizhou Medical UniversityGuiyang 550025GuizhouChina School of Electromechanical and Automotive Engineering Yantai UniversityYantai 264005ShandongChina State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina College of Optoelectronic Engineering Chongqing University of Posts and TelecommunicationsChongqing 400065China Key Laboratory of Optoelectronic Technology&Systems(Ministry of Education) College of Optoelectronic EngineeringChongqing UniversityChongqing 400044China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001HenanChina

Metal halide perovskites(MHP)are potential candidates for the photocatalytic reduction of CO_(2)due to their long photogenerated carrier lifetime and charge diffusion ***,the conventional long-chain ligand impedes the adsorption and activation of CO_(2)molecules in practical ***,a ligand modulation technology is employed to enhance the photocatalytic CO_(2)reduction activity of lead-free Cs_(2)AgInCl_(6)microcrystals(MCs).The Cs_(2)AgInCl_(6)MCs passivated by Oleic acid(OLA)and Octanoic acid(OCA)are used for photocatalytic CO_(2)*** results show that the surface defects and electronic properties of Cs_(2)AgInCl_(6)MCs can be adjusted through ligand *** with the OLA-Cs_(2)AgInCl_(6),the OCA-Cs_(2)AgInCl_(6)catalyst demonstrated a significant improvement in the catalytic yield of CO and CH_(4).The CO and CH_(4)catalytic yields of OCA-Cs_(2)AgInCl_(6)reached 171.88 and34.15μmol g^(-1)h^(-1)which were 2.03 and 12.98 times higher than those of OLA-Cs_(2)AgInCl_(6),and the total electron consumption rate of OCA-Cs_(2)AgInCl_(6)was 615.2μmol g^(-1)h^(-1)which was 3.25 times higher than that of OLA-Cs_(2)AgInCl_(6).Furthermore,in situ diffuse reflectance infrared Fourier transform spectra revealed the enhancement of photocatalytic activity in Cs_(2)AgInCl_(6)MCs induced by ligand *** study illustrates the potential of lead-free Cs_(2)AgInCl_(6)MCs for efficient photocatalytic CO_(2)reduction and provides a ligand modulation strategy for the active promotion of MHP photocatalysts.

关键词： Surface ligand Photocatalysis CO_(2)reduction Lead-free perovskite Reactive mechanism

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Preparation of chitosan-like magnetic composite microspheres and their adsorption properties for Cu (II)

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materials Today: Proceedings 2022年 71卷 105-113页

作者： Xinyu, Zhang Tao, Fang Hongwei, Yu Ming, Guo Nurxat.Nuraje College of Chemistry and Materials Engineering Zhejiang Agriculture & Forestry University Zhejiang Hangzhou 311300 China Department of Chemical and Materials Engineering School of Engineering & Digital Science Nazarbayev University Astana Kazakhstan Renewable Energy Systems and Materials Science Lab National Laboratory Astana Nazarbayev University Astana Kazakhstan

The novel magnetic composite microspheres (Fe3O4/HAD-C) coated with Fe3O4 were fabricated by inverse suspension cross-linking method, where glutaraldehyde was used as a crosslinking agent. Magnetic Fe3O4 particles and Hexamethylene Diamine Cellulose was prepared respectively by the chemical coprecipitation method and grafting amino group onto microcrystalline Cellulose. The scanning electron microscope, laser particle size analyzer, X-ray diffractometer, and thermogravimetric analyzer were used to characterize the magnetic Fe3O4/HAD-C composite microspheres. The findings demonstrate that the Fe3O4/HAD-C composite microspheres were spherical and well dispersed with the size range between 0.3 μm and 1.2 μm, and possessed super paramagnetic property with 39.72 emu·g−1. The mass of Fe3O4 in the composite is about 37.11 %. By using an adsorption study, the removal of Cu (II) from heavy metal wastewater by Fe3O4/HAD-C was examined. The findings showed that the composite microsphere made of Fe3O4/HAD-C effectively absorbed Cu (II). The entire adsorption procedure follows the Langmuir isothermal adsorption model and pseudo-second order kinetics. Fe3O4/HAD-C also had high reusability and stability. Even after 5 cycles of adsorption and desorption, Fe3O4/HAD-C still achieve 32.45 mg g−1. Environmentally friendly and effective, the unique magnetic chitosan-like composite microspheres (Fe3O4/HAD-C) developed in this study. © 2022

关键词： Cellulose

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Influence of Interfacial Enantiomeric Grafting on Melt Rheology and Crystallization of Polylactide/Cellulose Nanocrystals Composites

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Chinese Journal of Polymer Science 2022年第1期40卷 93-106页

作者： Hua-Gao Fang Kang-Jie Yang Qi-Zheng Xie Xu Chen Sheng-Li Wu Yun-Sheng Ding Department of Polymer Science and Engineering School of Chemistry and Chemical EngineeringHefei University of TechnologyHefei 230009China Anhui Province Key Laboratory of Advanced Functional Materials and Devices Hefei 230009China Anhui Institute for Food and Drug Control Hefei230051China

Incorporating the surface-grafted cellulose nanocrystals(CNCs)with enantiomeric polylactide(PLLA or PDLA)is an effective and sustainable way to modify PLLA,but their difference in promoting matrix crystallization is still *** this study,the CNCs with identical content and length of PLLA and PDLA(CNC-g-L and CNC-g-D)were prepared and blended with *** rheological properties of PLLA/CNC-gD are greatly improved,indicating that the stereocomplexation can significantly improve the interfacial strength as compared with the conventional van der Waals force in PLLA/***,the matrix crystallizes at a higher rate in PLLA/CNC-g-L than PLLA/***/CNC-g-L15 reaches its half crystallinity in 8.26 min while a longer period of 13.41 min is required for PLLA/*** observation reveals that the superior crystallization behavior in PLLA/CNC-g-L is originated from its higher nucleation efficiency and faster growth *** formation of low content of sc-PLA at the interface can restrict the diffusion of PLLA but contribute less to generate crystalline nuclei,which synergistically leads to the retarded crystallization kinetics in PLLA/*** the mechanism of different interfacial enantiomeric grafting on the melt rheology and crystallization of PLLA is of great significance for the development of high-performance polylactide materials.

关键词： Cellulose nanocrystal Polylactide nanocomposite Interfacial stereocomplexation Crystallization Rheology

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Novel organic/inorganic PDI-Urea/BiOBr S-scheme heterojunction for improved photocatalytic antibiotic degradation and H_(2)O_(2) production

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Chinese chemical Letters 2022年第12期33卷 5200-5207页

作者： Weiwei Wang Xibao Li Fang Deng Jiyou Liu Xiaoming Gao Juntong Huang Jilin Xu Zhijun Feng Zhi Chen Lu Han School of Materials Science and Engineering Nanchang Hangkong UniversityNanchang 330063China Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063China Department of Chemistry and Chemical Engineering Shaanxi Key Laboratory of Chemical Reaction EngineeringYan'an UniversityYan'an 716000China School of Materials and Metallurgy University of Science and Technology LiaoningAnshan 114051China

The matched energy band structure and efficient carrier separation efficiency are the keys to heterogeneous photocatalytic reactions.A novel organic/inorganic step scheme(S-scheme)heterojunction PDI-Urea/BiOBr composite photocatalyst was constructed by simple solvothermal reaction combined with in-situ growth *** composite photocatalyst not only has high chemical stability,but also can generate and accumulate a large number of active species(h^(+),·O_(2)^(-),·OH,H_(2)O_(2)).PDI-Urea/BiOBr showed higher photocatalytic activity for the degradation of antibiotic such as ofloxacin(OFLO),tetracycline(TC)and the production of H_(2)O_(2) in the spectral range of 400-800 *** apparent rate constant of 15%PDI-Urea/BiOBr for photocatalytic degradation of TC(or OFLO)was 2.7(or 2.5)times that of pure BiOBr and 1.7(or 1.8)times that of pure *** H_(2)O_(2) evolution rate of 15%PDI-Urea/BiOBr was 2.5 times that of PDI-Urea and 1.5 times that of BiOBr,*** work has formed a mature S-scheme heterojunction design thought and method,which offers new visions for the development of heterogeneous photocatalysts.

关键词： Photocatalysis Perylene diimide Bismuth bromide oxide S-scheme heterojunction Antibiotic

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Confinement of Fe atoms between MoS_(2) interlayers drives phase transition for improved reactivity in Fenton-like reactions

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Nano Research 2024年第3期17卷 1132-1139页

作者： Yibing Sun Yu Zhou Hongchao Li Chuan Wang Xuan Zhang Qian Ma Yingchun Cheng Jieshu Qian Bingcai Pan Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing 210094China Key Laboratory of Flexible Electronics and Institute of Advanced Materials Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech UniversityNanjing 211816China Department of General Dentistry Affiliated Stomatological Hospital of Nanjing Medical UniversityJiangsu Province Key Laboratory of Oral DiseasesNanjing 210029China Research Center for Environmental Nanotechnology(ReCENT) State Key Laboratory of Pollution Control and Resources ReuseSchool of EnvironmentNanjing UniversityNanjing 210023China

Phase manipulation of MoS_(2) from thermodynamically stable 2H phase to the unstable but more reactive 1T phase represents a crucial strategy for improving the reactivity in many *** widely adopted wet chemistry approach uses intercalating entities especially alkali metal ions to achieve the phase transition;however,these entities are normally inert for the target ***,we describe the first use of iron atoms for the intercalation of 2H-MoS_(2) layers,driving the partial transition from 2H to 1T ***,in the peroxymonosulfate(PMS)-based Fenton-like reactions,the interlayered confinement of Fe atoms not only activates the inert basal plane,but also adds more reactive Fe sites for the formation of metal-PMS complex as primary reactive species for pollutant *** the degradation of a model pollutant carbamazepine(CBZ),the Fe-intercalated MoS_(2) exhibits a first order rate constant 13.3 times higher than 2H-MoS_(2).This strategy is a new direction for manipulating the phase composition and boosting the catalytic reactivity of MoS_(2)-based catalysts in various scenarios,including environmental remediation and energy applications.

关键词： confinement MoS_(2) Fe atoms Fenton-like reactions hydrogen evolution reaction

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Fe nanoclusters anchored in biomass waste-derived porous carbon nanosheets for high-performance supercapacitor

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Chinese chemical Letters 2024年第8期35卷 362-366页

作者： Yuchen Wang Yaoyu Liu Xiongfei Huang Guanjie He Kai Yan Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology School of Environmental Science and EngineeringSun Yat-sen UniversityGuangzhou 510275China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China Electrochemical Innovation Lab Department of Chemical EngineeringUniversity College LondonLondonWC1E 7JEUnited Kingdom

Metal-nanocluster materials have gradually become a promising electrode candidate for supercapaci-tor *** high-efficient and rational architecture of these metal-nanocluster electrode mate-rials with satisfied supercapacitive performance are full of ***,Fe-nanocluster anchored porous carbon(FAPC)nanosheets were constructed through a facile and low-cost impregnation-activation *** characterization methods documented that FAPC nanosheets possessed a mesopore-dominated structure with large surface area and abundant Fe-N4 active sites,which are crucial for su-percapacitive energy *** optimal FAPC electrode exhibited a high specific capacitance of 378 F/g at a specific current of 1 A/g and an excellent rate capability(271 F/g at 10 A/g),which are comparable or even superior to that of most reported carbon ***,the FAPC-based device achieved a desired specific energy of 14.8 Wh/kg at a specific power of 700 W/*** work opens a new avenue to design metal-nanocluster materials for high-performance biomass waste-based supercapacitors.

关键词： Fe nanoclusters Biomass waste Porous carbon nanosheets Supercapacitor Charge transfer

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Failure evolution and instability prediction of fiber-reinforced polymer-confined cement mortar specimens under axial compression

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Environmental Science and Pollution Research 2024年第20期31卷 29730-29748页

作者： Li, Jian Bai, Jinwen Han, Yanna Feng, Guorui Shi, Xudong Ma, Junbiao Cui, Boqiang Wang, Kai Mi, Jiachen College of Mining Engineering Taiyuan University of Technology Shanxi Province Taiyuan030024 China Key Laboratory of Shanxi Province for Mine Rock Strata Control and Disaster Prevention Taiyuan University of Technology Taiyuan030024 China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan030024 China Department of Mining Engineering Shanxi Institute of Energy Jinzhong030600 China College of Safety and Emergency Management Engineering Taiyuan University of Science and Technology Taiyuan030024 China

In geotechnical engineering, a large number of pillars are often left in underground space to support the overlying strata and protect the surface environment. To enhance pillar stability and prevent instability, this study proposes an innovative technology for pillar reinforcement. Specifically, local confinement of the pillar is achieved through fiber-reinforced polymer (FRP) strips, resulting in the formation of a more stable composite structure. In order to validate the effectiveness of this structural approach, acoustic emission characteristics and surface strain field characteristics were monitored during failure processes, while mathematical models were employed to predict specimen instability. The test results revealed that increasing FRP strip confinement width led to heightened activity in acoustic emission events during failure processes, accompanied by a decrease in shear cracks but an increase in tensile cracks. Moreover, ductility was improved and deformation resistance capacity was enhanced within specimens. Notably, initial crack generation occurred within unconfined regions of specimens during failures;however, both length and width as well as overall numbers of cracks significantly decreased due to implementation of FRP strips. Consequently, specimen failure speed was slowed down accordingly. Finally, the instability of the partial FRP-confined cement mortar could be more accurately predicted based on the model of FRP-confined concrete. It was verified by the test results. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Stability

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Noble and Non-Noble Metal Based Catalysts for Electrochemical Nitrate Reduction to Ammonia:Activity,Selectivity and Stability

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Electrochemical Energy Reviews 2024年第1期7卷 1384-1422页

作者： Israr Masood ul Hasan Nengneng Xu Yuyu Liu Muhammad Zubair Nawaz Haitao Feng Jinli Qiao State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Environmental Science and EngineeringDonghua UniversityShanghai 201620China Institute for Sustainable Energy College of SciencesShanghai UniversityShanghai 200444China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Laboratory of 2D Optoelectronics and Nanoelectronics(L2DON) Department of Materials Science and EngineeringSouthern University of Science TechnologyShenzhen 518055GuangdongChina Key Laboratory of Green and High-End Utilization of Salt Lake Resources Qinghai Institute of Salt LakesChinese Academy of SciencesXining 810008QinghaiChina

Excessive nitrate(NO_(3)^(-))contamination has emerged as a critical environmental issue owing to the widespread use of nitrogen-based fertilizers,fossil fuel combustion,and the discharge of industrial and domestic ***,electrochemical nitrate reduction(eNO_(3)R)to ammonia(NH3)has emerged as a promising alternative to the traditional Haber-Bosch ***,the industrial implementation ofeNO_(3)R is hindered by low catalytic activity,poor selectiv-ity,and limited stability owing to competing hydrogen evolution *** paper provides a comprehensive overview of recent advancements ineNO_(3)R,particularly evaluating the catalytic activity,selectivity,and stability of both noble and non-noble metal *** review elucidates innovative catalyst design strategies,state-of-the-art developments,and potential directions for future ***,the paper explores the fundamental mechanisms underlyingeNO_(3)R forNH_(3)production,including electrocatalyst development methodologies,electrolyte effects,in situ characterization techniques,theoretical modeling,and cell design ***,factors influencingNH_(3)selectivity and catalyst structural composition are thoroughly ***,this review provides comprehensive insights into optimizingeNO_(3)R processes for synthesizingNH_(3),which can promote further advancements in this field.

关键词： Nitrate reduction Electrocatalysis NH_(3)production Activity Selectivity Stability

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Improving flame retardancy and hydrophobicity of fabrics via graphene inclusion obtained from recycled batteries

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materials Today: Proceedings 2022年 71卷 78-89页

作者： Ahmed, Tamseel Mohammed, Qamar Subeshan, Balakrishnan Rahman, Muhammad Nuraje, Nurxat Asmatulu, Eylem Department of Mechanical Engineering Wichita State University 1845 Fairmount Wichita KS 67260 United States Department of Chemical and Materials Engineering School of Engineering and Digital Science Nazarbayev University Astana Kazakhstan Renewable Energy Systems and Materials Science Lab National Laboratory Astana Nazarbayev University Astana Kazakhstan

Recent advances in nanotechnology have enabled the bonding of nanoparticles to a wide variety of multifunctional fabrics. Nanoparticles have been incorporated into fabrics to produce flame-retardant, water-repellent, and ultraviolet-resistant multifunctional fabrics. Fabrics with flame-retardant properties can delay flame propagation, which is critical in various applications, particularly for high-temperature surroundings. Graphene nanoparticles have been utilized in various applications because of their unique properties, including high conductivity, light weight, thermal stability, and other excellent mechanical performance. Here, we report that the synthesis of graphene obtained from recycled batteries was utilized to improve the flame retardancy of fabrics by ensuring strong bonding among fabrics and nanoparticles. Functionally integrated graphene was captured using an electrochemical exfoliation process of the graphite rod from recycled batteries. The captured graphene was applied to the fabrics using the dipping-drying method to obtain flame-retardant graphene-enhanced fabrics. The structure and chemical composition of the captured graphene was characterized by ultraviolet–visible (UV–vis) absorption, nuclear magnetic resonance (NMR), and Fourier-transform infrared (FTIR) spectroscopy. Several other characterizations were performed on the graphene-enhanced fabrics to study flame retardancy, hydrophobicity, and surface morphology. This work shows that graphene-enhanced 100 % cotton fabric gave the best results in terms of flame retardancy: a total igniting time of 33 s in the flammability test. The hydrophobicity of the graphene-enhanced 100 % cotton fabric was also significantly improved. The hydrophilic surface was modified to a hydrophobic surface with a water contact angle of 106°. Graphene-enhanced cotton-polyester blend fabrics were also tested, and results were promising in terms of flammability and hydrophobicity. Overall, the modifying method illustra

关键词： Graphene

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Mechanical stimulation devices formechanobiology studies:a market,literature,and patents review

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Bio-Design and Manufacturing 2023年第3期6卷 340-371页

作者： F.Melo-Fonseca O.Carvalho M.Gasik G.Miranda F.S.Silva Center for MicroElectroMechanical Systems University of Minho(CMEMS-UMinho)Campus de Azurém4800-058 GuimarãesPortugal LABBELS–Associate Laboratory BragaGuimarãesPortugal International Iberian Nanotechnology Laboratory(INL) 4715-330 BragaPortugal School of Chemical Engineering Aalto University Foundation00076 EspooFinland Seqvera Ltd. HelsinkiFinland Department of Materials and Ceramic Engineering CICECOAveiro Institute of MaterialsUniversity of Aveiro3810-193 AveiroPortugal

Significant advancements in various research and technological fields have contributed to remarkable findings on the physiological dynamics of the human *** closely mimic the complex physiological environment,research has moved from two-dimensional(2D)culture systems to more sophisticated three-dimensional(3D)dynamic *** bioreactors or microfluidic-based culture models,cells are typically seeded on polymeric substrates or incorporated into 3D constructs which are mechanically stimulated to investigate cell response to mechanical stresses,such as tensile or *** review focuses on the working principles of mechanical stimulation devices currently available on the market or custom-built by research groups or protected by patents and highlights the main features still open to *** are the features which could be focused on to perform,in the future,more reliable and accurate mechanobiology studies.

关键词： Biomaterials Polymers Actuators Mechanical stress Mechanotransduction

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